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| Number | Title | Issue Date |
| 5797972 | Sewage sludge disposal process and product Pellets or briquettes useful as fuel are produced from sewage sludge solids. Mechanically stable pellets or briquettes result from combining a major portion of sewage sludge solids with lesser amounts of lime and binder materials suitable for imparting st... | 08/25/1998 |
| 5711768 | Sewage sludge disposal process and product Briquettes useful as fuel are produced from dehydrated sewage sludge containing 65 weight percent or more sewage sludge solids. The briquettes on a dry basis contain from about 50 to about 95 weight percent sewage sludge solids together with from about 3 ... | 01/27/1998 |
| 5431702 | Waste conversion process and products A process is disclosed for time production of fuel pellets or briquettes from sewage sludge solids and municipal solid waste with minimal drying requirements. In one of its more specific aspects, this invention relates to a solid pelleted or briquetted fu... | 07/11/1995 |
